How does it affect the underlying roles if Inherited Role is updated/modified

Hi All,

Could you please help me understand if any changes made to the Inherited Role would adversely affect all the underlying roles in that case?

1. What is the common practice while creating a custom role (Do we add Privileges/Roles from the Train Stop 2, i.e. Function Security Policies, or the Train Stop 4, i.e. Role Hierarchy
2. Please share documentation that highlights these areas.
3. For example, if a role inherits BI Consumer and we add the BI Author role to the Inherited role in the future, will it affect the underlying roles that inherit the parent role?

Regards,

Swapnil